* Copyright (C) 2007,2008 Øyvind Harboe <oyvind.harboe@zylin.com> *
* Copyright (C) 2008 by Spencer Oliver <spen@spen-soft.co.uk> *
* Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> *
+ * Copyright (C) 2010 by Antonio Borneo <borneo.antonio@gmail.com> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
-#ifndef FLASH_NOR_CORE_H
-#define FLASH_NOR_CORE_H
+
+#ifndef OPENOCD_FLASH_NOR_CORE_H
+#define OPENOCD_FLASH_NOR_CORE_H
#include <flash/common.h>
+/**
+ * @file
+ * Upper level NOR flash interfaces.
+ */
+
struct image;
#define FLASH_MAX_ERROR_STR (128)
* within a flash bank. A single bank typically consists of multiple
* sectors, each of which can be erased and protected independently.
*/
-struct flash_sector
-{
- /// Bus offset from start of the flash chip (in bytes).
+struct flash_sector {
+ /** Bus offset from start of the flash chip (in bytes). */
uint32_t offset;
- /// Number of bytes in this flash sector.
+ /** Number of bytes in this flash sector. */
uint32_t size;
/**
* Indication of erasure status: 0 = not erased, 1 = erased,
* other = unknown. Set by @c flash_driver_s::erase_check.
+ *
+ * Flag is not used in protection block
*/
int is_erased;
/**
* Indication of protection status: 0 = unprotected/unlocked,
* 1 = protected/locked, other = unknown. Set by
* @c flash_driver_s::protect_check.
+ *
+ * This information must be considered stale immediately.
+ * A million things could make it stale: power cycle,
+ * reset of target, code running on target, etc.
+ *
+ * If a flash_bank uses an extra array of protection blocks,
+ * protection flag is not valid in sector array
*/
int is_protected;
};
+/** Special value for write_start_alignment and write_end_alignment field */
+#define FLASH_WRITE_ALIGN_SECTOR UINT32_MAX
+
+/** Special values for minimal_write_gap field */
+#define FLASH_WRITE_CONTINUOUS 0
+#define FLASH_WRITE_GAP_SECTOR UINT32_MAX
+
/**
* Provides details of a flash bank, available either on-chip or through
* a major interface.
* may use the @c driver_priv member to store additional data on a
* per-bank basis, if required.
*/
-struct flash_bank
-{
+struct flash_bank {
char *name;
struct target *target; /**< Target to which this bank belongs. */
int chip_width; /**< Width of the chip in bytes (1,2,4 bytes) */
int bus_width; /**< Maximum bus width, in bytes (1,2,4 bytes) */
+ /** Erased value. Defaults to 0xFF. */
+ uint8_t erased_value;
+
+ /** Default padded value used, normally this matches the flash
+ * erased value. Defaults to 0xFF. */
+ uint8_t default_padded_value;
+
+ /** Required alignment of flash write start address.
+ * Default 0, no alignment. Can be any power of two or FLASH_WRITE_ALIGN_SECTOR */
+ uint32_t write_start_alignment;
+ /** Required alignment of flash write end address.
+ * Default 0, no alignment. Can be any power of two or FLASH_WRITE_ALIGN_SECTOR */
+ uint32_t write_end_alignment;
+ /** Minimal gap between sections to discontinue flash write
+ * Default FLASH_WRITE_GAP_SECTOR splits the write if one or more untouched
+ * sectors in between.
+ * Can be size in bytes or FLASH_WRITE_CONTINUOUS */
+ uint32_t minimal_write_gap;
+
/**
* The number of sectors on this chip. This value will
* be set intially to 0, and the flash driver must set this to
* some non-zero value during "probe()" or "auto_probe()".
*/
int num_sectors;
- /// Array of sectors, allocated and initilized by the flash driver
+ /** Array of sectors, allocated and initialized by the flash driver */
struct flash_sector *sectors;
+ /**
+ * The number of protection blocks in this bank. This value
+ * is set intially to 0 and sectors are used as protection blocks.
+ * Driver probe can set protection blocks array to work with
+ * protection granularity different than sector size.
+ */
+ int num_prot_blocks;
+ /** Array of protection blocks, allocated and initilized by the flash driver */
+ struct flash_sector *prot_blocks;
+
struct flash_bank *next; /**< The next flash bank on this chip */
};
-/// Registers the 'flash' subsystem commands
+/** Registers the 'flash' subsystem commands */
int flash_register_commands(struct command_context *cmd_ctx);
-/// Initializes the 'flash' subsystem drivers
-int flash_init_drivers(struct command_context *cmd_ctx);
/**
* Erases @a length bytes in the @a target flash, starting at @a addr.
+ * The range @a addr to @a addr + @a length - 1 must be strictly
+ * sector aligned, unless @a pad is true. Setting @a pad true extends
+ * the range, at beginning and/or end, if needed for sector alignment.
* @returns ERROR_OK if successful; otherwise, an error code.
*/
int flash_erase_address_range(struct target *target,
- uint32_t addr, uint32_t length);
+ bool pad, uint32_t addr, uint32_t length);
+
+int flash_unlock_address_range(struct target *target, uint32_t addr,
+ uint32_t length);
+
+/**
+ * Align start address of a flash write region according to bank requirements.
+ * @param bank Pointer to bank descriptor structure
+ * @param addr Address to align
+ * @returns Aligned address
+*/
+target_addr_t flash_write_align_start(struct flash_bank *bank, target_addr_t addr);
+/**
+ * Align end address of a flash write region according to bank requirements.
+ * Note: Use address of the last byte to write, not the next after the region.
+ * @param bank Pointer to bank descriptor structure
+ * @param addr Address to align (address of the last byte to write)
+ * @returns Aligned address (address of the last byte of padded region)
+*/
+target_addr_t flash_write_align_end(struct flash_bank *bank, target_addr_t addr);
+
/**
* Writes @a image into the @a target flash. The @a written parameter
* will contain the
*/
int flash_write(struct target *target,
struct image *image, uint32_t *written, int erase);
+
/**
* Forces targets to re-examine their erase/protection state.
* This routine must be called when the system may modify the status.
*/
void flash_set_dirty(void);
-/// @returns The number of flash banks currently defined.
+
+/** @returns The number of flash banks currently defined. */
int flash_get_bank_count(void);
+
+/** Deallocates bank->driver_priv */
+void default_flash_free_driver_priv(struct flash_bank *bank);
+
+/** Deallocates all flash banks */
+void flash_free_all_banks(void);
+/**
+ * Provides default read implementation for flash memory.
+ * @param bank The bank to read.
+ * @param buffer The data bytes read.
+ * @param offset The offset into the chip to read.
+ * @param count The number of bytes to read.
+ * @returns ERROR_OK if successful; otherwise, an error code.
+ */
+int default_flash_read(struct flash_bank *bank,
+ uint8_t *buffer, uint32_t offset, uint32_t count);
/**
* Provides default erased-bank check handling. Checks to see if
* the flash driver knows they are erased; if things look uncertain,
* @returns ERROR_OK if successful; otherwise, an error code.
*/
int default_flash_blank_check(struct flash_bank *bank);
+
/**
- * Provides a default blank flash memory check. Ensures the contents
- * of the given bank have truly been erased.
- * @param bank The flash bank.
- * @returns ERROR_OK if successful; otherwise, an error code.
+ * Returns the flash bank specified by @a name, which matches the
+ * driver name and a suffix (option) specify the driver-specific
+ * bank number. The suffix consists of the '.' and the driver-specific
+ * bank number: when two str9x banks are defined, then 'str9x.1' refers
+ * to the second.
*/
-int default_flash_mem_blank_check(struct flash_bank *bank);
-
+int get_flash_bank_by_name(const char *name, struct flash_bank **bank_result);
/**
* Returns the flash bank specified by @a name, which matches the
* driver name and a suffix (option) specify the driver-specific
* bank number: when two str9x banks are defined, then 'str9x.1' refers
* to the second.
*/
-struct flash_bank *get_flash_bank_by_name(const char *name);
+struct flash_bank *get_flash_bank_by_name_noprobe(const char *name);
/**
- * Returns a flash bank by the specified flash_bank_s bank_number, @a num.
+ * Returns the flash bank like get_flash_bank_by_name(), without probing.
* @param num The flash bank number.
- * @returns A struct flash_bank for flash bank @a num, or NULL
+ * @param bank returned bank if fn returns ERROR_OK
+ * @returns ERROR_OK if successful
*/
-struct flash_bank *get_flash_bank_by_num(int num);
+int get_flash_bank_by_num(int num, struct flash_bank **bank);
/**
* Retreives @a bank from a command argument, reporting errors parsing
* the bank identifier or retreiving the specified bank. The bank
* Returns the flash bank located at a specified address.
* @param target The target, presumed to contain one or more banks.
* @param addr An address that is within the range of the bank.
+ * @param check return ERROR_OK and result_bank NULL if the bank does not exist
* @returns The struct flash_bank located at @a addr, or NULL.
*/
-struct flash_bank *get_flash_bank_by_addr(struct target *target, uint32_t addr);
+int get_flash_bank_by_addr(struct target *target, uint32_t addr, bool check,
+ struct flash_bank **result_bank);
+/**
+ * Allocate and fill an array of sectors or protection blocks.
+ * @param offset Offset of first block.
+ * @param size Size of each block.
+ * @param num_blocks Number of blocks in array.
+ * @returns A struct flash_sector pointer or NULL when allocation failed.
+ */
+struct flash_sector *alloc_block_array(uint32_t offset, uint32_t size, int num_blocks);
-#endif // FLASH_NOR_CORE_H
+#endif /* OPENOCD_FLASH_NOR_CORE_H */
Code Review / openocd.git / blobdiff